Which method involved having a deaf person touch the throat of the speaker?

The method that involved having a deaf person touch the throat of the speaker is associated with Samuel Heinicke's approach to teaching the deaf. Heinicke is known for advocating oralism, which emphasized speech and lipreading over sign language for deaf education. The technique of having a deaf individual place their hand on the throat of the speaker was intended to help them feel the vibrations of the spoken word, aiding in the development of their speech abilities. This tactile method was seen as a way to connect the visual modality of speech with the physical sensations of vocalization, thereby assisting in language acquisition.

In contrast, the other methods listed focus on different aspects of communication or education for the deaf. Sign language interpretation involves translating spoken language into sign language. ASL fingerspelling is a technique used in American Sign Language where letters of the alphabet are spelled out by hand to convey words that do not have established signs. Visual cueing techniques are strategies that enhance communication through visual means, such as gestures or illustrations, rather than focusing on sensations related to speech.